120015749 has 12 divisors (see below), whose sum is σ = 140330124. Its totient is φ = 102340224.

The previous prime is 120015743. The next prime is 120015803. The reversal of 120015749 is 947510021.

It can be written as a sum of positive squares in 2 ways, for example, as 73530625 + 46485124 = 8575^2 + 6818^2 .

It is a de Polignac number, because none of the positive numbers 2^k-120015749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120015743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3437 + ... + 15869.

It is an arithmetic number, because the mean of its divisors is an integer number (11694177).

Almost surely, 2^120015749 is an apocalyptic number.

It is an amenable number.

120015749 is a deficient number, since it is larger than the sum of its proper divisors (20314375).

120015749 is a wasteful number, since it uses less digits than its factorization.

120015749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12644 (or 12637 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 120015749 is about 10955.1699667326. The cubic root of 120015749 is about 493.2639919077.

The spelling of 120015749 in words is "one hundred twenty million, fifteen thousand, seven hundred forty-nine".